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LTE (Long Term Evolution) Protocol Analyzer


The LTE (Long Term Evolution) protocol standard was developed as an enhancement to existing Universal Mobile Telecommunications System (UMTS) to provide users enhanced mobile Internet access. The evolved Universal Mobile Telecommunications Service (UMTS) terrestrial Radio Access Network (RAN), abbreviated as E-UTRAN, is also known as LTE.

GL's LTE analysis is an optional module available with PacketScan analyzer (PKV100) with additional licensing (PKV107).

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Although an evolution of UMTS (UMTS uses wideband code-division multiple access (WCDMA) for transmitting signals), the LTE air interface is a completely new system based on orthogonal frequency-division multiple access (OFDMA) in the downlink and single-carrier frequency-division multiple access (SC-FDMA) (DFTS-FDMA) in the uplink that efficiently supports multi-antenna technologies (MIMO). This robust feature is useful when handling the varying propagation conditions seen in mobile radio. In MIMO techniques, either multiple antennas can transmit the same data stream to improve data-transmission reliability or different antennas can transmit different data streams simultaneously to increase throughput.

Another significant feature of LTE is its high bandwidth—up to 20 MHz. Because the usable bandwidth is scalable, LTE can also operate in the existing 5-MHz UMTS frequency bands, or in even smaller bands.

Network Architecture

LTE standard is progressing as a part of 3rd Generation Partnership Project (3GPP). The Evolved Packet System (EPS) standardized by 3GPP is divided into a radio access network known as the E-UTRAN and a core network known as the Evolved Packet Core (EPC). The E-UTRAN consists of eNodeBs, which provide the radio interface toward the user equipment. The eNodeBs are interconnected with each other via the IP-based X2 interface and toward the Evolved Packet Core (EPC) via the IP-based S1 interfaces. This is depicted in the above figure.

GL's LTE analyzer is capable of capturing, decoding and performing various test measurements across various interfaces i.e. S1, S3, S4, S5 (or S8), S6a, S10, S11, S13 and X2 interfaces of the LTE network.

GL Communications supports both Real-time and Offline types of LTE Analyzer. Required pre-requisites are - Hardware Dongles and Windows® 2000/XP/Vista Operating System.

Main Features

  • Displays Summary, Detail, Hex-dump, Statistics, and Call Trace Views, the contents of this view can also be copied to clipboard.
  • Detail View displays decodes of a user-selected frame from the Summary View.
  • Statistics View displays statistics based on frame count, byte count, frames/sec, bytes/sec etc for the entire captured data.
  • Hex dump View displays raw data as a hexadecimal and ASCII octet dump the contents of this view can also be copied to clipboard.
  • Search and filtering capabilities.
  • Exports Summary View information to a comma delimited file for subsequent import into a database or spreadsheet.
  • Capability to export detailed decode information to an ASCII file.
  • Any protocol field can be added to the summary view, filtering, and search features providing users more flexibility to monitor required protocol fields.
  • Remote monitoring capability using GL's Network Surveillance System.

Additional features supported by Offline LTE Analyzer

  • Trace files for analysis can be loaded through simple command-line arguments.
  • Multiple trace files can be loaded simultaneously with different GUI instances for offline analysis.

Screenshot of LTE Analyzer

Supported Interfaces & Protocols:

GL's LTE analyzer is capable of capturing and decoding various interfaces i.e. S1, S3, S4, S5 (or S8), S6a, S10, S11, S13 and X2 interfaces of the LTE network. The protocols supported for decoding across all these interfaces are NAS, S1AP, X2AP, eGTP, GTP-U, Diameter, SCTP, UDP, TCP, IP.

Supported Protocols Specification Used
MAC IEEE 802.3
IP RFC 791
S1AP 3GPP TS 36.413 V9.0.0
X2AP 3GPP TS 36.423 V9.0.0
eGTP 3GPP TS 29.274 V8.0.0
NAS 3GPP TS 24.301 V9.0.0

Click here to view the protocol glossary page for more information

Network-wide Monitoring & Troubleshooting of LTE Networks

GL's Network Monitoring System (NMS) with LTE Analyzer provides a complete tool set to monitor LTE networks. The system provides scalable, centralized, real time, end-to-end network visibility and trouble-shooting capability for operators deploying LTE networks.

For more details on GL's Network Monitoring System (NMS), click here.


  Summary, Detail and Hexdump View
  Setting the Filtering & Search Criteria
  Enhanced Trace Saving Options
  Save/Load All Configuration Settings

Buyer's Guide:

Please Note: The XX in the Item No. refers to the hardware platform, listed at the bottom of the Buyer's Guide, which the software will be running on. Therefore, XX can either be ETA or EEA (Octal/Quad Boards), PTA or PEA (tProbe Units), UTA or UEA (USB Units), HUT or HUE (Universal Cards), and HDT or HDE (HD cards) depending upon the hardware.

Item No. Item Description
PKV100 PacketScan™ Software (required)
PKV107 LTE (Long Term Evolution) Analyzer (Optional with PacketScan™)
PKV108 Offline LTE Analyzer (Decode / Analyze pre-captured LTE files)
  Related Software
PKS141 MAPS™ LTE X2-AP Emulator
PKS140 MAPS™ LTE S1 Emulator
PKS142 MAPS™ LTE eGTP Emulator
PKS146 MAPS™ SGs Interface Emulation
PKS170 NetSurveyorWeb™
PKS171 Network Surveillance Agent Toolkit
IPN501 IPNetSim™ - 1G
IPN505 IPNetSim™ - 1G Tablet
IPN110 IPLinkSim™ 1G WAN Link Emulator (1 Gbps, 2 active ports)
IPN510 IPLinkSim™ 1G/ 10G WAN Link Emulator (1G/ 10G, 2 active ports)
XX090 HDLC Capture and Playback Software (T1 or E1)
XX120 Real-time SS7 Analyzer (T1 or E1)
XX153 TRAU Analyzer
XX155 GPRS Protocol Analyzer
  Related Hardware
PacketExpert™ 12 Port
PacketExpert™ 24 Port
VQT010 VQuad™ Software (Stand Alone)
VQT280 VQuad™ Probe HD (with Dual UTA HD)
VQT281 VQuad™ Probe HD w/o Dual UTA HD
VQT285 VQuad™ Probe HD Upgrade

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